Re: [coreboot] Only UDMA/33 PATA on m57sli, UDMA/66 with factory BIOS

[Carl-Daniel Hailfinger]

On 07.07.2009 21:47, Peter Stuge wrote:
> Harald Gutmann wrote:
> > PCI registers on coreboot address 0x52 (from the IDE device) has
> > value FF while proprietary has value 99. This is the so called
> > "CABLE_BIT".
>
> Fair enough, but this is the "output" of coreboot. The tricky part
> is to find the "input" for the coreboot code. How to find out which
> cable type is really attached, on this chipset?

I think there is a chipset GPIO you can read to find this out. Dumping
the factory BIOS GPIOs for 40-pin and 80-pin cables would probably help
find the correct setting.

Regards,
Carl-Daniel